Scientific Papers

Recreational Harvest of Sharks and Rays in Western Australia Is Only a Minor Component of the Total Harvest

Recreational Harvest of Sharks and Rays in Western Australia Is Only a Minor Component of the Total Harvest

Recreational Harvest of Sharks and Rays in Western Australia Is Only a Minor Component of the Total Harvest Braccini, M.; Lai, E.; Ryan, K.; Taylor, S. ABSTRACT: Sharks and rays are a global conservation concern with an increasing number of species considered at risk of extinction, mostly due to overfishing. Although the recreational harvest of

Limited Trans-Oceanic Movements and Regional Residency in North Pacific Blue Sharks

Limited Trans-Oceanic Movements and Regional Residency in North Pacific Blue Sharks

Isotopic Tracers Suggest Limited Trans-Oceanic Movements and Regional Residency in North Pacific Blue Sharks (Prionace glauca) Daniel J. Madigan, Oliver N. Shipley, Aaron B. Carlisle, Heidi Dewar, Owyn E. Snodgrass, Nigel E. Hussey ABSTRACT: Blue sharks (Prionace glauca) are globally distributed, large-bodied pelagic sharks that make extensive migrations throughout their range. In the North Pacific,

Gill surface area provides a clue for the respiratory basis of brain size in the blacktip shark

Gill surface area provides a clue for the respiratory basis of brain size in the blacktip shark

Gill surface area provides a clue for the respiratory basis of brain size in the blacktip shark (Carcharhinus limbatus) Serena Wong, Jennifer S. Bigman, Kara E. Yopak, Nicholas K. Dulvy ABSTRACT: Brain size varies dramatically, both within and across species, and this variation is often believed to be the result of trade-offs between the cognitive

First record of swimming speed of the Pacific sleeper shark using a baited camera array

First record of swimming speed of the Pacific sleeper shark using a baited camera array

First record of swimming speed of the Pacific sleeper shark Somniosus pacificus using a baited camera array Yoshihiro Fujiwara, Yasuyuki Matsumoto, Takumi Sato, Masaru Kawato, Shinji Tsuchida ABSTRACT: The Pacific sleeper shark Somniosus pacificus is one of the largest predators in deep Suruga Bay, Japan. A single individual of the sleeper shark (female, ~300 cm

DNA barcoding of shark species traded in Singapore

DNA barcoding of shark species traded in Singapore

Sharks in hot soup: DNA barcoding of shark species traded in Singapore Celine J.N. Liu, Sean Neo, Nathalia M. Rengifo, Ian French, Sarah Chiang, Mathias Ooi, Jie Min Heng, Nathaniel Soon, Jing Ying Yeo, Haaken Z. Bungum, Kurumi Ota, Arina A. Koul, Yan Hong Poh, Benjamin J. Wainwright ABSTRACT: Sharks are apex predators that play

Size Changes within a Southeastern United States Coastal Shark Assemblage: 1975–2018

Size Changes within a Southeastern United States Coastal Shark Assemblage: 1975–2018

Size Changes within a Southeastern United States Coastal Shark Assemblage: 1975–2018 Martin T. Benavides, F. Joel Fodrie, Stephen R. Fegley, Giada Bargione ABSTRACT: Harvest may have myriad effects on target species, including a change in population size structure. To assess whether size shifts have occurred among managed coastal species of shark (superorder Selachimorpha), we examined

Distribution Patterns and Abundance of Halmahera Walking Shark in Weda Bay North Maluku

Distribution Patterns and Abundance of Halmahera Walking Shark in Weda Bay North Maluku

Distribution Patterns and Abundance of Halmahera Walking Shark (Hemiscyllium halmahera) in Weda Bay North Maluku, Indonesia MU’MIN, Mu’min et al. ABSTRACT: The Halmahera walking shark is a nocturnal species that lives at the bottom of waters and is a species endemic to North Maluku. Weda Bay is one of the largest bays on the island

Recreational fishing as a source for the monitoring of a critically endangered shark in southern Brazil

Recreational fishing as a source for the monitoring of a critically endangered shark in southern Brazil

Recreational fishing as a source for the monitoring of a critically endangered shark in southern Brazil Paulo Roberto Santos dos Santos ABSTRACT: This study tested the use of information collected by anglers for the fisheries monitoring of a Critically Endangered shark in southern Brazil. Catch records of Mustelus fasciatus, Critically Endangered at national and global

Temporal partitioning in Port Jackson sharks

Temporal partitioning in Port Jackson sharks

Intraspecific variation in diel patterns of rocky reef use suggests temporal partitioning in Port Jackson sharks Nathan Charles Bass, Joanna Day, Tristan L. Guttridge, Nathan A. Knott, Culum Brown ABSTRACT: Limited information exists about the temporal residency patterns of marine predators, especially at the individual level. Temporal partitioning of resources can reduce intra-specific competition, but

Age and growth of the brown-banded bamboo shark

Age and growth of the brown-banded bamboo shark

Age and growth of the tropical oviparous shark, Chiloscyllium punctatum in Indonesian waters Fahmi, Kurniawan W, Tibbetts IR, Oktaviyani S, Dudgeon CL, Bennett MB ABSTRACT: The brown-banded bamboo shark, Chiloscyllium punctatum is the most common shark caught in coastal commercial fisheries throughout southeast Asia, yet we lack the life history information necessary for reliable stock

The effectiveness of SMART drumlines as a tool for catching white sharks off NSW

The effectiveness of SMART drumlines as a tool for catching white sharks off NSW

The effectiveness of Shark-Management-Alert-in-Real-Time (SMART) drumlines as a tool for catching white sharks, Carcharodon carcharias, off coastal New South Wales, Australia Rick D. Tate, Brendan P. Kelaher, Craig P. Brand, Brian R. Cullis, Christopher R. Gallen, Stephen D.A. Smith, Paul A. Butcher ABSTRACT: White (Carcharodon carcharias L.), bull (Carcharhinus leucas, Müller & Henle) and tiger

Acanthodian dental development and the origin of gnathostome dentitions

Acanthodian dental development and the origin of gnathostome dentitions

Acanthodian dental development and the origin of gnathostome dentitions Rücklin, M., King, B., Cunningham, J.A. et al. ABSTRACT: Chondrichthyan dentitions are conventionally interpreted to reflect the ancestral gnathostome condition but interpretations of osteichthyan dental evolution in this light have proved unsuccessful, perhaps because chondrichthyan dentitions are equally specialized, or else evolved independently. Ischnacanthid acanthodians are

An environmental DNA assay for detecting shark species involved in human–shark conflicts

An environmental DNA assay for detecting shark species involved in human–shark conflicts

Development of an environmental DNA assay for detecting multiple shark species involved in human–shark conflicts in Australia Anthony van Rooyen, Adam D. Miller, Zach Clark, Craig D. H. Sherman, Paul A. Butcher, Justin R. Rizzari, Andrew R. Weeks ABSTRACT: The number of human–shark interactions has increased worldwide during the past decade resulting in injuries and

First record of a potential neonate tiger shark at Cocos Island

First record of a potential neonate tiger shark at Cocos Island

First record of a potential neonate tiger shark (Galeocerdo cuvier) at a remote oceanic island in the Eastern Tropical Pacific Marta Cambra, Sergio Madrigal-Mora, Isaac Chinchilla, Geiner Golfín-Duarte, Christopher G. Lowe, Mario Espinoza ABSTRACT: Tiger sharks (Galeocerdo cuvier) play an important ecological role as top predators, yet knowledge of their reproductive ecology is scarce. Here,

Volume of the whale shark

Volume of the whale shark

Volume of the whale shark and their mechanism of vertical feeding Taketeru Tomita, Minoru Toda, Kiyomi Murakumo, Kei Miyamoto, Rui Matsumoto, Keiichi Ueda, Keiichi Sato ABSTRACT: The present study provides a noninvasive method to estimate the body volume of sharks (Elasmobranchii, Selachii) using a computational geometric model. This method allows the volume of sharks to